Multiple jet pipe relay regulator



g- 26, 1958 B. L. CALLENDER MULTIPLE JET PIPE RELAY REGULATOR 2 Sheets-Sheet 1 Filed July 27, 1956 INVENTOR rcl Lcallehder %Z7H ttrhegs Bern BY 7 Aug. 26, 1958 B. L. CALLENDER MULTIPLE JET PIPE RELAY REGULATOR 2 Sheets-Sheet 2 Filed July 27, 1956 Lender R 0 6 W 5 23 6 WC w 7 8 27 G3 23 n 5 2 IN 4 822 w 2 v. V d \idfflq Darn rd Atto O 9 lo I\ l FIG: 6

United States Patenp MULTIPLE JET 'PIPE'RELAY REGULATOR Bernard L. Callender, Harvey, Ill., assignor to A skania Regulator Company, Chicago, 111., a corporation of Illinois Application-July 27, 1956, Serial No. 600,497

6 Claims.- (Cl. 137 -83) The present invention relates to multiple jet pipe relay regulators of 'the'gene'ral type'well known as"jet pipe regulators, an early form-of'which-is disclosed by United States Patent to Wunsch, No. 1,550,410. As heretofore used commercially, such a-regulator comprises a jet pipe radially projecting from a spindle that is supported for rotative'movement about itsaxis forvariation of degree of registration of an axial fluid discharge opening in its end with a facingreceiver port, or'variation of relative degrees of registration of the orifice with a pair of receiver ports that are narrowly spaced inthe directions of swing of the orifice; Fluid under pressure is discharged as a jet from the 'jetpipe orifice, to which it is supplied through internal passages in the spindle and jet pipe,-and thekinetic energy of the jet as it impinges on the port or parts develops thereina pressure or pressures the magnitudes of which is a function of degree-of orifice-port registration. Such pressure, or difference-betweenpressures of a pair of receiver'ports, is the output of the regulator.

For a number of reasons having-to do with linearity of response of-variation of effective output pressure to degree of jet pipe swinging movement, sensitivity to very minute jet pipe deflections, accurate repeatability of response, and-so on, there is an apparent practical limit to jet discharge orifice diameter of the order of eight 'or ten millimeters, which, as will-bereadily understood, very seriously limits the volume rate of delivery 'capacity of such regulators. Somewhat similarly, there are apparent practical limits to-magnitudesof pressure 'and volume flow rate at which the jet fiuid'can be supplied, arising from the throttling effectof -the receiver ports, the diameters ofwhich arelimited in correspondence to discharge orifice diameters; Heretofore in installations requiring fluid delivery capacities beyond-the practical maximum of jet pipe regulators,*it has been customary to employ pilot arrangements "wherein'the jetpipe-operates in relay fashion'a control valve that is positioned to regulate a large capacity supply to the power unit of the relay, in a so-called booster arrangement The primary object of the present inventionis provision of a novel relay regulator ofjet pipe type, having-capacity that is high as compared to=conventional prior art regulators of the type in question,'but=-thatavoids undesirable consequences, such as those indicated,' of increase of jet diameter and/or pressure and ra'te of jet delivery beyond practical limits.

Another object is the provision'of a practical multiple jet pipe relay regulator.

Still another object is provision of a practicaland convenient multiple jet pipe relay regulator assembly.

In the accompanying drawings:

Fig. 1 is a-transverse section ofa jet pipe regulator arranged according to the invention.-

Patented Aug. 26, 1958 Fig.4 is a section on line 4-4 of Fig. 1.

Fig. 5 is a section similar to Fig. 4 showing a modified" regulator arrangement.

Fig. 6 is a-horizontal section showing the plan arrange ment of the device of Fig. 5.

Describing the drawings in detail, the invention resides cooperation to correspondingly vary the output pressures that they respectively develop in'consequence of relative 1 movement of the structures.

In the arrangements shown the ejector, as is conventional in jet pipe regulators, is the movable structure. in Figs. 1, 2 and 4 the ejector 7 structure comprises a spindle 9 that is suspended in conventional jet pipe arrangement,

as by rotary bearings at its ends, for rotation about its longitudinal axis. A plurality of jet pipes 10 project radially from spindle 9. Each jet pipe 10 has a discharge orifice in its distal end 11, and an internal passage 12 (Fig. 1) that connects its discharge orifice with apassage 13 in the interior of spindle 9, through which, and again in conventional jet pipe fashion, the pressurized power fluid is supplied for forcible jet discharge by the jet pipe orifices.

Receiver structure 8 advantageously'comprises a casing wall 14 that encloses a cylindrical regulator chamber 15 that is disposed coaxial with spindle 9, and with receiver ports opening into chamber 15 in locations for respective cooperation with the different jet pipes 10. As is more common in jet pipe regulators the port arrangement shown comprises paired receiver ports for cooperation with each jet pipe, the effective output pressureof the regulator being the differential between the pressures developed by'the different ports of such pairs. For cooperation with each jet pipe 10 a pair of ports 16,17 is provided. The more counter clockwise ports 17 ofeach pair correspond to each other with respect to sense in which pressures that the jets develop in them vary in response to direction of rotative movement of spindle 9 and swing of jet pipes 10, as do the more clockwise ports 16 of each pair. In the arrangement of Figs. 1, 3 and 4, the jetspipes 10 are arranged in oppositely projecting, coaxial pairs, with the pairs spaced along spindle 9 and in stacked registration. The corresponding ports 16 that are disposed for cooperation with the different jet pipes 10 are interconected by passagemeans, shown as a system of passageways 18 extended circumferentially about approximately one-half of the receiver structure and in its wall 14 and to which ports" are connected by inclined ways 19, one such passage 18 i being provided for each pair of jet pipes, and the dif ferent passages 18 being externally interconnected by.

piping 20 and all connected to a service line 21. Similarly, all of corresponding ports 17 are interconnected: by inclined ways 22, internal partially circumferential passages 23 and external piping 24, and all are connected to a second service line 25.

Preferbaly each pair of ports 16, 17 is provided in an individual distributor member 26, which permitsindi vidual adjustments for proper positioning oftherports.

relative to the difierent jet pipes 10, as may be necessary due to tolerances in the jet pipes and their positions as mounted on spindle 9. Each such distributor memher is shown as a unitary body having an external mounting flange 27 for face to face contact with the exterior surface of easing wall 14, and a body 28 extended through wall 14 and having a surface 29 that faces the interior of chamber and through which a pair of ports 16, 17 open, and, for use in an oil powdered regulator, a flange 30 that surrounds the ports and that acts as an oil catcher, a semi-enclosure that maintains a body of spent oil about the jet pipe orifice and receiver ports to prevent entrainment of air by the jet and its injection into the ports and delivery system.

It will be understood from the foregoing that rotative movement of the ejector structure 7, in response to imposition upon it of a signal force or stroke, will swing all jet pipes in a single direction, resulting in a corresponding change in degrees of registration of all jet pipe discharge orifices with the different ports 16, 17 of each distributor member 26, and that the rates of flow through service lines 21, is determined by the number of jet pipe-distributormember couples 1%, 26, as well as by the magnitude of difference between pressures developed between ports 16, 17 of each member 26.

In the modified arrangement of Fig. 5, plural jet pipes 32 are spaced along spindle 33, with the axes of the jet pipes symmetrically spaced about the spindle axis. The distributor members are identical to those shown in Figs. 1 to 4 and have the same reference numerals applied to them.

It is preferable that the multiple jet pipes suspended by a single spindle be symmetrically distributed, so that reactive forces generated by the axial discharges from the respective jet pipes will be balanced, instead of exerting on the spindle forces that are unbalanced and that would tend to deflect it from its proper position or to cause development of friction forces at its suspension bearings. Such symmetrical jet pipe distribution is ac complished in the Fig. 1 form by axial alignment of oppositely directed pairs of jet pipes, and in the Fig. 6 arrangement by angularly spacing the jet pipes equally about the spindle axis.

It will be appreciated that numerous arrangements of multiple jet pipe and receiver or distributor couples other than those shown can be made while obtaining the benefit of large fluid delivery capacity and retaining the previously recognized advantages of jet pipe relay regulators, such as extremely high sensitivity, good linearity and large amplification. Accordingly, it is to be understood that the limits of the invention herein disclosed are to be ascertained from the appended claims rather than from the foregoing exemplary specific arrangements.

I claim:

I. A hydraulic relay regulator comprising an ejector structure and a receiver structure and support means interconnecting said structures for movement of one relative to the other in preselected directions and in a preselected path, said ejector structure having plural fluid discharge apertures and internal passage means for delivering fluid to them for discharge as multiple jets, and said receiver structure having plural distributor members each of which has at least one receive port, said distributor members corresponding in number to said discharge apertures, each of said distributor members being disposed for cooperation with a difierent one of said apertures, and said apertures and ports being relatively disposed for corresponding variation in degrees of registration of the various said ports with the respective cooperative said apertures as a consequence of movement of said one structure relative to the other, said receiver structure having internal passa e means communicating with said ports for delivery of fluid that they receive from said apertures and said regulator including struc, ture provided with a common delivery passage and branch passageways interconnecting said delivery passage with said receiver structure passage means.

2. A hydraulic relay regulator according to claim 1, wherein said receiver ports are arranged in pairs the diffcrent ones of which are disposed for cooperation with the different ones of said apertures, and the different ports of each said pair being narrowly spaced in the directions of relative movement between said structures, said receiver structure internal passage means comprise a pair of passages the different ones of which communicate with all of the ones of said ports that correspond in respect to their directions of spacing from the ports with which respectively they are paired, and the latter said structure being provided with a pair of delivery pas- -s respectively connected with the different ones of d ports that so correspond.

3. A hydraulic relay regulator comprising an ejector structure including a spindle mounted for rotative movement about its longitudinal axis and a plurality of jet pipes projecting substantially radial from said spindle, said jet pipes having discharge apertures in their distal ends and they and said spindle having internal passages for supply of fiuid under pressure to said apertures for jet discharge therefrom, and a receiver structure having different portions that respectively face said apertures and each of which is provided with at least one receiver port, said ports being positioned for-respective cooperation with the different said apertures and for corresponding variation of degree of registration of each said orifice with the port in the facing said surface in conscquence of rotation of said receiver structure about said axis, said receiver structure having passage means for delivering fluid received by said ports from said orifices, and said regulator including structure provided with a common delivery passage and branch passageways interconnecting said common delivery passage with each of said passage means that is connected with a said port.

4. A hydraulic relay regulator according to claim 3, wherein said jet pipes, apertures and receiver ports are spaced axially of said spindle.

5. A hydraulic relay regulator according to claim 3, wherein said jet pipes comprise plural pairs of coaxially disposed jet pipes, the pipes of each pair projecting oppositely from said spindle and the respective said pairs being spaced along said spindle in the directions of said axis.

6. A hydraulic relay regulator according to claim 3, wherein said receiver structure comprises a casing cuclosing a cylindrical chamber that is disposed coaxial with said spindle and plural distributor members corresponding in number to said jet pipes, said members being supported by said casing and each having a surface exposed in said chamber and facing a different one of said discharge apertures, said ports comprising pairs of ports each said pair of ports opening through a different one of said surfaces and the ports of each pair being spaced circumferentially of said chamber, said passage means comprising a pair of internal passages extended about said chamber in the wall structure of said casing and the different said passages respectively communicating with the ports of each said pair that correspond with respect to direction of their spacing from the other ports of each pair.

References Cited in the file of this patent UNITED STATES PATENTS 2,228,022 Ziebolz Jan. 7, 1941 FOREIGN PATENTS 358,513 Great Britain Sept. 30, 1931 572,788 Germany Mar. 23, 1933 UNITE I IS TATES PATENT CERTIFICATE or eoREcrmN Patent No, 2,84%013 August 26, 1958 Bernard L Callender It is hereby certified that error appears in the-printed specification of the above -numbered patent requiring correction and that the said Letters Patent should read as corrected below Golmnn 1 lines 1.6 and 17 for et 'o'ipe"regulators,""' read "jet "pipe regulators", column 2, line 51, for"jess""'read jet 3 line 55 g for "interconected" read'e ini'ere'onneotm line 67, for "Preferbaly" reed Preferabl column 3, line 60;, for "receive" read receiver Signjed'and sealed "this 11th day of November l958,

(smug;

Attest:

KARL EL, AXLINE ROBERT C. WATSGN Attest'mg Oflicer Commissioner of Patents 

